I would make sure to get parfocal eyepieces. If not, you will tire quickly of having to make adjustments with the small focus knob (it takes a lot of turns).

As for a dew shield, which bundle did you order? The back pack bundle comes with the shield.

A 12V jump start battery, and adapter cord should be high on your list. I use a 25 dollar Rally brand that I found at a local K Mart. It is small, and will easily power my 60 and 80 at the same time for a session. I run the scopes off of 12V power with no issues.